Home / 10,075.12-15,112.66-2,679.58

Finding the Fourth Proportional to 10,075.12, 15,112.66 and 2,679.58

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Solution

The fourth proportional to 10,075.12, 15,112.66 and 2,679.58 is: 4,019.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,075.12 : 15,112.66 = 2,679.58 : x
  2. Step 2: Convert to fraction form
    10,075.12/15,112.66 = 2,679.58/x
  3. Step 3: Cross multiply
    10,075.12x = 15,112.66 × 2,679.58
  4. Step 4: Simplify right side
    10,075.12x = 40,495,581.48
  5. Step 5: Solve for x
    x = 40,495,581.48/10,075.12
  6. Step 6: Final answer
    x = 4,019.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.